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<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <table border="" align="center" width="500px" height="200px" cellspacing="0">
        <tr>
            <td colspan="2">单元格1单元格2单元格3</td>
            <td>单元格4</td>
            <td>单元格5</td>
        </tr>
        <tr>
            <td rowspan="2">单元格6-11</td>
            <td>单元格7</td>
            <td rowspan="=3">单元格81318</td>
            <td>单元格9</td>
            <td>单元格10</td>
        </tr>
        <tr>
            
            <td>单元格12</td>
          
            <td>单元格14</td>
            <td>单元格15</td>
        </tr>
        <tr>
            <td>单元格16</td>
            <td>单元格17</td>
            
            <td>单元格19</td>
            <td>单元格20</td>
        </tr>
    </table>
</body>
</html>